Maretron DCM100 - Manual (Page 24)

DCM100 User’s Manual
Page A2 Appendix A – NMEA 2000 Interfacing Revision 1.0
PGN 127508 – Battery Configuration Status
The DCM100 uses this PGN to transmit unchanging battery configuration data.
Field 1: Battery Instance – This field indicates the particular battery for which this data
applies. A single battery will have an instance of 0. Batteries in boats with multiple
batteries will be numbered uniquely, starting at 0.
2: Battery Type – This field indicates the type of battery. The DCM100 indicates one of
the following values: 0=Flooded, 1=Gel, 2=AGM.
3: Supports Equalization – This field indicates whether the battery supports an
equalization charge. The DCM will always transmit a value of 0 for this field.
4: Reserved – This field is reserved by NMEA; therefore, the DCM100 sets all bits to a
logic 1.
5: Nominal Voltage – This field indicates the nominal voltage of the battery. The
DCM100 indicates one of the following values: 0=6 Volts, 1=12 Volts, 2=24 Volts,
3=32 Volts, 4=36 Volts, 5=42 Volts, 6=48 Volts.
6: Battery Chemistry – This field indicates the chemistry of the battery. The DCM100
indicates one of the following values: 0=Lead Acid, 1=LiIon, 2=NiCad, 3=ZnO,
3=NiMH.
7: Battery Capacity – This field indicates the capacity of the battery in units of 1 amp-
hour.
8: Battery Temperature Coefficient – This field indicates the increase of battery capacity
with increasing temperature in units of 1%/°C.
9: Peukert Exponent – This field indicates the Peukert exponent of the battery with a
resolution of 0.002 (unitless).
10: Charge Efficiency Factor – This field indicates the charge efficiency factor of the
battery in units of 1%.